Thania Garcia Producer Metro Boomin has sold a portion of his publishing catalog to Shamrock Capital for close to $70 million, Variety can confirm. News of the hip-hop acquisition was first published by Billboard on Tuesday morning and arrives as Shamrock continues to forge major investments in catalog sales, expanding a portfolio that includes the master recordings for Taylor Swift’s first six albums, which it acquired in 2020 from Scooter Braun’s Ithaca Holdings. Metro Boomin is riding high on the streaming and sales success of his second full-length album, “Heroes & Villains.” The R&B and hip-hop set was released last December and was the St. Louis artist’s biggest album in terms of first-week sales. It was also his second record to debut at No. 1 on the all-genre inclusive albums chart.